Example showing how to use native DLLs on Windows Store Apps. Example produces two Plugins.dll with same functionality - one for Desktop and the other one for Windows Store Apps, when you test your plugin in Editor - Desktop plugin is used, when you test a Window Store App - the other Plugins.dll is used.
Example showing how to start application with XAML page not containing Unity window. Basically you have two XAML pages - StartPage.xaml and MainPage.xaml, StartPage.xaml is the initial window from where you can navigate to MainPage.xaml containing Unity window.